IT1232084B - Coding system for broadband audio signals enlarged - Google Patents

Coding system for broadband audio signals enlarged

Info

Publication number
IT1232084B
IT1232084B IT8967317A IT6731789A IT1232084B IT 1232084 B IT1232084 B IT 1232084B IT 8967317 A IT8967317 A IT 8967317A IT 6731789 A IT6731789 A IT 6731789A IT 1232084 B IT1232084 B IT 1232084B
Authority
IT
Italy
Prior art keywords
enlarged
audio signals
coding system
broadband audio
broadband
Prior art date
Application number
IT8967317A
Other languages
Italian (it)
Other versions
IT8967317D0 (en
Inventor
Montagna Roberto
Omologo Maurizio
Sereno Daniele
Original Assignee
Cselt Centro Studi Lab Telecom
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cselt Centro Studi Lab Telecom filed Critical Cselt Centro Studi Lab Telecom
Priority to IT8967317A priority Critical patent/IT1232084B/en
Publication of IT8967317D0 publication Critical patent/IT8967317D0/en
Application granted granted Critical
Publication of IT1232084B publication Critical patent/IT1232084B/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/66Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission
    • H04B1/667Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission using a division in frequency subbands
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/002Dynamic bit allocation
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/02Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/0204Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders using subband decomposition
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/08Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/10Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a multipulse excitation
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/08Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/10Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a multipulse excitation
    • G10L19/113Regular pulse excitation
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/08Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/12Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] vocoders
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L2019/0001Codebooks
    • G10L2019/0011Long term prediction filters, i.e. pitch estimation
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L2019/0001Codebooks
    • G10L2019/0013Codebook search algorithms
    • G10L2019/0014Selection criteria for distances
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00Speech or voice analysis techniques not restricted to a single one of groups G10L15/00-G10L21/00
    • G10L25/03Speech or voice analysis techniques not restricted to a single one of groups G10L15/00-G10L21/00 characterised by the type of extracted parameters
    • G10L25/06Speech or voice analysis techniques not restricted to a single one of groups G10L15/00-G10L21/00 characterised by the type of extracted parameters the extracted parameters being correlation coefficients
IT8967317A 1989-05-03 1989-05-03 Coding system for broadband audio signals enlarged IT1232084B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IT8967317A IT1232084B (en) 1989-05-03 1989-05-03 Coding system for broadband audio signals enlarged

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
IT8967317A IT1232084B (en) 1989-05-03 1989-05-03 Coding system for broadband audio signals enlarged
EP90108332A EP0396121B1 (en) 1989-05-03 1990-05-02 A system for coding wide-band audio signals
DE69028434T DE69028434T2 (en) 1989-05-03 1990-05-02 System for coding wideband audio signals
DE69028434A DE69028434D1 (en) 1989-05-03 1990-05-02 System for coding wideband audio signals
DE199090108332T DE396121T1 (en) 1989-05-03 1990-05-02 System for coding of wideband audio signals.
CA002016042A CA2016042C (en) 1989-05-03 1990-05-03 System for coding wide-bank audio signals

Publications (2)

Publication Number Publication Date
IT8967317D0 IT8967317D0 (en) 1989-05-03
IT1232084B true IT1232084B (en) 1992-01-23

Family

ID=11301410

Family Applications (1)

Application Number Title Priority Date Filing Date
IT8967317A IT1232084B (en) 1989-05-03 1989-05-03 Coding system for broadband audio signals enlarged

Country Status (4)

Country Link
EP (1) EP0396121B1 (en)
CA (1) CA2016042C (en)
DE (3) DE69028434D1 (en)
IT (1) IT1232084B (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5754976A (en) * 1990-02-23 1998-05-19 Universite De Sherbrooke Algebraic codebook with signal-selected pulse amplitude/position combinations for fast coding of speech
DE69229974T2 (en) * 1991-02-26 2000-07-20 Nec Corp Method and apparatus for encoding speech parameters
IT1257065B (en) * 1992-07-31 1996-01-05 Sip Encoder low delay audio signals, techniques for utilizing synthesis analysis.
US5717824A (en) * 1992-08-07 1998-02-10 Pacific Communication Sciences, Inc. Adaptive speech coder having code excited linear predictor with multiple codebook searches
IT1257431B (en) * 1992-12-04 1996-01-16 Sip Method and device for the quantization of the excitation gains in voice coders based on analysis-synthesis techniques
BE1007617A3 (en) * 1993-10-11 1995-08-22 Philips Electronics Nv Transmission system using different codeerprincipes.
US5506908A (en) * 1994-06-30 1996-04-09 At&T Corp. Directional microphone system
JPH09506478A (en) * 1994-10-06 1997-06-24 フィリップス エレクトロニクス ネムローゼ フェンノートシャップ Method of manufacturing a light emitting semiconductor diodes and such diodes
JP2842276B2 (en) * 1995-02-24 1998-12-24 日本電気株式会社 Wideband signal encoding device
TW321810B (en) * 1995-10-26 1997-12-01 Sony Co Ltd
FI114248B (en) 1997-03-14 2004-09-15 Nokia Corp Method and apparatus for audio coding and audiodekoodaukseen
GB2326572A (en) * 1997-06-19 1998-12-23 Softsound Limited Low bit rate audio coder and decoder
JP3199020B2 (en) 1998-02-27 2001-08-13 日本電気株式会社 Encoding apparatus and decoding apparatus of an audio music signal
FI113571B (en) * 1998-03-09 2004-05-14 Nokia Corp speech Coding
WO2006030340A2 (en) * 2004-09-17 2006-03-23 Koninklijke Philips Electronics N.V. Combined audio coding minimizing perceptual distortion
ES2684297T3 (en) * 2008-07-11 2018-10-02 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. And discriminator method for classifying different segments of an audio signal comprising speech and music segments

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5921039B2 (en) * 1981-11-04 1984-05-17 Nippon Telegraph & Telephone
EP0111612B1 (en) * 1982-11-26 1987-06-24 International Business Machines Corporation Speech signal coding method and apparatus
EP0267344B1 (en) * 1986-10-30 1993-09-01 International Business Machines Corporation Process for the multi-rate encoding of signals, and device for carrying out said process

Also Published As

Publication number Publication date
CA2016042A1 (en) 1990-11-03
DE396121T1 (en) 1991-03-21
CA2016042C (en) 1998-04-28
DE69028434T2 (en) 1997-02-20
IT8967317D0 (en) 1989-05-03
EP0396121A1 (en) 1990-11-07
DE69028434D1 (en) 1996-10-17
EP0396121B1 (en) 1996-09-11

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TA Fee payment date (situation as of prs-date), data collected since 19931001

Effective date: 19950419